Metal-bound board



No. 613,896. Patehted' Nov. 8, I898. w. H. WINSLUW.

METALv BOUND BOARD.

.(Application filed Nov. 26, 189

(No Model.)

UNITED STATES PATENT OFFICE.

WILLIAM H. WINSLOW, OF CHICAGO, ILLINOIS.

METAL-BOUND BOARD.

SPECIFICATION forming part of Letters Patent No. 613,896, dated November8, 1898.

A li tion filed, November 26,1897. Serial No. 669,832. (No model.)

To all whom it may concern:

Be it known that 1, WILLIAM H. WINsLow, a citizen of the United Statesof America, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements in Metal--Bound Boards for Shelving and the Like, of which the following is aspecification.

My invention relates to a metal-bound board designed especially withreference to use in shelving-as, for instance, in libraries, drugstores,and any other place in which a neat and durable finish is desired.

The purpose of the invention is to enable an attractive and practicallyindestructible surface to be provided without the use of expensivematerials, as is ordinarily necessary in the case of ordinary woodshelving, and also without necessitating a great amount or labor inpolishing the surface of the shelves.

To such end the invention consists in a certain combination of novelfeatures,which will be described in the preferred form in connectionwith the drawings presented herewith and the essential portions thereofpointed out in the appended claims.

In the drawings, Figure 1 is a perspective of a board designedespecially for use as a library-shelf and illustrating one form of myinvention. Fig. 2 is a longitudinal horizontal section of said board inline 2 2 of Fig. 1. Fig. 3 is a transverse section, upon a larger scale,in line 3 3 of Fig. 2; and Fig. 4 is a perspective of the j ointin themetal covering described below.

Referring to the drawings, A is a metal covering or envelop,which may bemade of a piece of tubing, but which I prefer to make by folding sheetmetal upon itself and joining it together in the form of a flattenedtube with the ordinary stovepipe-joint shown at a in' Fig. 4. Thistubular envelop is preferably shaped to the desired cross-section of theshelf (here shown as rectangular) and a filling made of cheap wood orother suitable material is provided, as is seen at B B. This filling isdivided longitudinally and in a slightly oblique line b to form twowedge-shaped sec tions, in order that after the filling has beeninserted in the envelop it may be expanded until the covering is boundtightly thereon. The expansion is effected by forcing inward the largerends of the two sections, and thus wedging them one upon the other.

'It is of course obvious that considerable modification is possible inthe specific form and arrangement and a great variety of materials maybe used. I desire, therefore, not to limit myself to the specific devicehere shown in any of these respects.

It should be noticed that the two wedge shaped sections of the fillingare provided with a ton gue-and-groove joint. I prefer this constructionfor the reason that it prevents any lateral displacement of one sectionupon the other.

I claim as new and desire to secure by Let ters Patent- 1. A metal-boundboard consisting of a metal covering in the form of a flattened tube anda filling composed of two or more wedgeshaped sections whereby thefilling may be expanded within the covering by wedging the sections oneupon the other; substantially as described.

2. A metal-bound board consisting of a metal covering in the form of aflattened tube and a filling composed of two or more wedgeshapedsections having a tongue-and-groove joint whereby the filling may beexpanded within the covering and lateral displacement 1 of one sectionupon another prevented; substantially as described.

In witness whereof I have hereunto set my hand, at Chicago, in thecounty of Cook and State of Illinois, this 18th day of November, A. D.1897.

WILLIAM H. WINSLOW.

Witnesses:

CHAS. O. SHERVEY, A. I. H. NELSON.

